He Kupu Whakataki ki ngā Ārai Mura e Hangai ana ki te Hauota mō te Nairon

He Kupu Whakataki ki ngā Ārai Mura e Hangai ana ki te Hauota mō te Nairon

Ko ngā ārai mura e ahu mai ana i te hauota he iti te paitini, te kore e waikura, te pumau i te wera me te UV, te pai o te ātete mura, me te whai hua o te utu. Heoi, ko ō rātou ngoikoretanga ko te uaua ki te tukatuka me te kore e horapa ki roto i te anga polymer. Ko ngā ārai mura e ahu mai ana i te hauota mō te nairon ko te MCA (melamine cyanurate), te melamine, me te MPP (melamine polyphosphate).

E rua ngā āhuatanga o te tikanga ārai-mumura:

1. Tikanga Ā-tinana "Te Whakahauhau me te Whakamahanatanga": Ka whakaitihia e te ārai mura te pāmahana o te mata o te rauemi pūmua, ka wehea mai i te hau mā te whakahauhau me te mimiti wera.
2. Te Whakapūmautanga Waro me te Tikanga Intumescent i te Wāhanga Whakapoto: Ka taunekeneke te aukati mura ki te nairona, ka whakatairanga i te whakapūmautanga waro tika me te whakawhānui.

E rua ngā mahi a te MCA i roto i te tukanga ārai-mumura, e whakatairanga ana i te whakapūngao waro me te whakapūngao huka. He rerekē te tikanga ārai-mumura me te whai huatanga i runga i te momo nairona. E whakaatu ana ngā rangahau mō te MCA me te MPP i roto i te PA6 me te PA66 ka puta he hononga whakawhiti i roto i te PA66 i ēnei ārai-mumura engari ka whakatairanga i te pirau i roto i te PA6, ka hua ake he pai ake te mahi ārai-mumura i roto i te PA66 i tērā i roto i te PA6.

1. Melamine Cyanurate (MCA)

Ka hangaia te MCA mai i te melamine me te waikawa cyanuric i roto i te wai, ka hanga he tāpiringa here-hauwai. He mea tino pai te aukati ahi, kāore he halogen, he iti te paitini, he iti hoki te paowa e whakamahia whānuitia ana i roto i ngā polymer nairona. Heoi, he teitei te ira rewa o te MCA tuku iho (ka pirau me te whakangawari i runga ake i te 400°C) ā, ka taea anake te whakaranu ki ngā kapia i roto i te ahua matūriki totoka, ka hua ake he marara kore taurite me te rahi matūriki nui, ka pā kino ki te pai o te aukati ahi. Hei tāpiri, ko te mahi matua a te MCA i roto i te wahanga hau, ka hua ake he iti te hanganga waro me ngā paparanga waro kore-tiaki i te wā tahunga.

Hei whakatika i ēnei take, kua whakamahia te hangarau hiato ngota hei whakarerekē i te MCA mā te whakauru i tētahi tāpiri ātete-mumura tāpiri (WEX), e whakaiti ana i te pūwāhi rewa o te MCA, e āhei ai te rewa tahi me te horapa tino pai ki te PA6. Ka whakarei ake hoki te WEX i te hanganga waro i te wā tahunga, ka whakapai ake i te kounga o te paparanga waro me te whakapakari i te pānga ātete-mumura o te MCA, ā, ka puta he rauemi ātete-mumura me te mahi tino pai.

2. Te Taapiri Mua Ngaahi (IFR)

He pūnaha ārai mura nui te IFR, kāore he halogen. Ko ōna painga i ngā ārai mura halogen ko te iti o te tukunga paowa me te tukunga hau kore paitini i te wā e tahuna ana. Heoi anō, ka taea e te paparanga waro i hangaia e te IFR te mimiti i te polymer rewa e mura ana, e ārai ana i te maturuturu me te horapa o te ahi.

Ko ngā wāhanga matua o te IFR ko:

• Pūtake hau (ngā matū kei roto i te melamine)
• Pūtake waikawa (ngā mea ārai mura o te ūkuikui-hauota)
• Pūtake waro (te nairona tonu)
• Ngā tāpiringa mahi tahi (hei tauira, te konutea borate, te konumohe hauwaiwai) me ngā kaihoko ārai-maturuturu.

Ina ko te ōwehenga papatipu o ngā aukati mura o te phosphorus-hauota ki ngā matū kei roto i te melamine:

• I raro iho i te 1%: Kāore i te rawaka te pānga ātete mura.
• Neke atu i te 30%: Ka puta te mimiti i te wā e tukatukahia ana.
• I waenga i te 1%–30% (ina koa ko te 7%–20%): Te mahi ātete ahi tino pai, me te kore e pā ki te ngāwari o te tukatuka.

  More info., pls contact lucy@taifeng-fr.com